GB/T 34917-2017 in English

VALID

Determination of gelation degree of unplasticized poly (vinyl chloride) (PVC-U) products-Torque rheometer method

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 34917-2017
Document status:	VALID
Title in English:	Determination of gelation degree of unplasticized poly (vinyl chloride) (PVC-U) products-Torque rheometer method
Title in Chinese:	硬聚氯乙烯(PVC-U)制品凝胶化度的测定转矩流变仪法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-11-01
Implemented on:	2018-05-01
ICS Classification:	83.140.01-Rubber and plastics products in general
Professional Classification:	GB-National Standard
Related Keywords:	gelation degree gelation torque difference determination torque rheometer method products-torque rheometer method introduction application torque rheometer method key parameter control
Related Topics:	Rheometer Torque Rheometer degree of gel polymerization Torque rheometer test method Torque rheometer test method Rheological curve A set of torque rheometer Hardness tester manufacturing Gel purifier Gel Rheometer Polyethylene rheometer Rheometer torque Gel Rheometer Rigid PVC Rheometer Determination of Gels Used Torque Rheometer Sample preparation method for torque rheometer pvc gel degree pvc rheological agent Fluid torque meter curing torque Gel Preparer Rheometer two-point method Hybrid Torque Rheometer Rheometer sample GBT34917 GB/T 34917-2017 Denaturing gradient gel electrophoresis instrument Preparation of polyvinyl alcohol hydrogel Haake Torque Rheometer Preparation method of polyvinyl alcohol hydrogel Torque Rheometer Test Torque Rheometer Torque Test Rheological test method for food pectin Torque rheometer national standard Torque rheometer test Chemical preparation method of polyvinyl alcohol hydrogel Method for preparing hydrogel using polyvinyl alcohol Torque rheology test Torque rheology curve test Rotational rheometer gel sample Silicone gel rheology test

《GB/T 34917-2017硬聚氯乙烯（PVC-U）制品凝胶化度的测定转矩流变仪法》由TC374（全国质量监管重点产品检验方法标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

1. Background and significance of the standard

GB/T 34917-2017 "Determination of gelation degree of rigid polyvinyl chloride (PVC-U) products - Torque rheometer method" is a test method for the gelation degree of PVC-U materials during processing. The standard was proposed by the National Technical Committee for Standardization of Key Product Inspection Methods for Quality Supervision and was issued and implemented in 2017.

2. Technical principles and methods

Standard framework dimensions	Technical features	Scope of application
Torque rheometer method	Key parameter control:Temperature (190°C), speed (45 r/min or 30 r/min); Core indicators:Minimum torque and gelation torque difference	Determination of gelation degree in PVC-U products and processing
Preparation of reference compound	Condition control:Temperature does not exceed 100°C; Method selection:Manual mixing or high-speed mixer	Ensure the comparability and accuracy of experimental data
Sample processing flow	Step specifications: Crushing, sieving, weighing and adding; Mass calculation formula: W=V×K×D	Applicable to powder, granular and product form samples

3. Practical application and case analysis

In actual production, the gelation degree of PVC-U material directly affects its processing performance and final product quality. For example, in the pipeline manufacturing process, too low a gelation degree may lead to insufficient material fluidity, while too high a gelation degree may cause excessive load on the processing equipment.

More samples: NB/T 47013.2-2015 YD/T 3934-2021 DL/T 368-2010

Sample only — not a preview of GB/T 34917-2017